atwood and g



H. l. ATWOOD AND G B. BAiNS, 3D

LAWNATED COMPOSHE WHEEL. APPLICATION IFILED 050.24, 1920. RENEWED NOV.

Patented Jniy 18, 192' 9 SHEETS-SHEET 1.

avwevvtoz H, ATWOOG AND G B. BAENS, 3D.

LRWHNATED COMPOSITE WHEEL APPLiCATIDN FILED 05024.1920. RENEWED rmv.16,1921.

ure 1. of the drawings and roughly molded to I the form generallydesired.

Following the step above described, one or more sheets 4. preferably ofthe same l neteriel that comprising the plies 2, are firepared andapplied over the surfaces or the partly formed wheel body shown inFigure 2, and in the manner illustrated in Figure 3, this sheet or thetwo or more sheets cmploycd extending overthe said faces of theincomplete wheel body end over the molded portions 3 and also over a.greater or less Width of the periphery of the structure shown inFigure 1. The next step in the method consists in placing the assemblageshown in Figure 3 in a suitable mold and subjecting the some to heat andpressure, and in this step the mass of material 3 will be vulcanized tothe required. degree of hardness and pressed to the true curvilinearform desired. At the some time the covering sheets or piles 4 will. bevulcanized to the exposed surfaces of the structure shown in Figure 1 aswell as to the molded mass 3. To the completed wheel body thus producedmay then be applied any desired rim structure and any other ports orstructures which it may be desired to employ in connection with thewheel.

It will be understood that as 9. result oi" the method above pointedout, :1 wheel may be produced which has srnoi'lth exposed surfaces ofcurvilinear contour exhibiting! any desired complex curves for in the.molding operation and by the use of properly formed inolol members, themess of plastic material 3 will be molded precisely to the form (lefinedby the mold ports, and the covering sheets or plies l will be unused toclosely conform to the molded contour.

In. the form of the invention shown in Figures 4 and 5 oi the drawings,the wheel body is built up in substantially the manner shown in Figure 1of the drawings but the desired curvilinear contour of either or bothsides of the bod is produced by Working the initially prod need blank tothe required form or by adding to a structure such as that shown inFigure l of the drawings other plies variously shaped and proportionedto produce, for example u bulged portion 5 at one side or both sides ofthe Wheel. TllllS in the embodiment illustruted one of such bulgedportions may be located at the periphery of the face of the wheel andonother such bulged portion may be located at the center of the wheeland thus define the hub. Thus in this embodiment additional plies l and2 are added to the let-sided structure originally produced, or theoriginslly produced fiat-sided structure of a predetermined thickness isworked to the required contour, the supplemental plies torus ing thebulged portions 5 taking the place of the'plestic vnlcanizublo materiel3 employed in the first fl-BjCI'llfril embodiment or the invention.

Having produced whatis shown in F3" ure 4: of the draWin -3s one or moresheets i of materiel corresponding in structure to the bonding plies 2{incl illustrated in detail in Figure (5, are applied over the surfaceof the said structure shown in Figure l in the manner illustrated inFigure 5 and previously described in the illustrated in Figure 3. andthe entire assemblage is then subjected to heat and pressure in asuitable mold as previously pointed out, hus uniting all of the ports bya process of vulcanization and cauing; the sheets thus to conformclosely and smoothly to the contour of the surfaces or. the structureshown Figure l. wheel body thus produce may be ado.- ed any desired rimsuch for the rim shown in Figure and indicated lay the numerel '7', andany d 'red huh Having thus described the invention, is claimed new i l.The in I laminated which comprises provid face with. an outstrrz tisllyleiinii ing to the be -np snrinre, n izuble material, and SlllilQC ZHuge to u molding; ope zeal. and pressure wherel oi the ply to t thesome to co said snrfiioc,

2. 'lh-e method of prod laminated structure m or which cru'i'iprisespraiviili'og a face with on outstanding per tericl capable of risingmolded one port-ion defines substentielly the 0 "our desired applying tothe l'illllil-llp sin-"lace ply of vuleanizehle material, and subjectingassemblage too. molding operation attended by heat and pressure wherebyto mold the said outstanding portion and whereby to effect union ot theply to the huiituip surface and cause the ply to conform: to the contourof the said surface.

of vulcanassemenderl The method of i'iroglucing ii roniposite laminatedstructure of coin r pier; cotton i ernste olies no material the outerwhich compr mscznhlin; c of tibrous inutcniul and of bonrli applying tothe niece of one of pli at mass of material capable of n coznoosi'telaminated structure of complex contour whichcomp'rises providing a flatbody surface with an outstanding portion of a material capable of beingmolded, shaping the material to substantially define the contourdesired, applying to the built-up surface a plyof rubber having embeddedtherein a prising a laminated body provded upon one face with anoutstanding portion definin a non-fiat contour, and a plyof materiavulcanized to the said face and conforming to the contour thereof.

6. A composite laminated'structure comprising a laminated body providedupon one face with an outstanding portion defining a non-flat contour,and a ply of rubber material united to the said face and conformingtothe contour thereof. v 7. A composite laminated structure comprising alaminated body provided upon one face with an outstanding portiondefining a non-flat contour, and a ply of rubber having a sheet offoraminous'material embedded therein vulcanized to the said face andconforming to the contour thereof.

8. A wheel body having a body portion comprising a'plurality ofalternate plies of fibrous material and bonding material, an 1outstanding contour-defining portion molded upon one face of the body,anda ply of material extending over the said face and conforming to thecontour thereof.

9.. A wheel body having a body portion comprising a plurality ofalternate plies of fibrous material and bonding material, an

outstanding contour-defining portion mold-' ed upon one face of thebody, and a ply of the said bonding material vulcanized to the said faceand conforming to the contour thereof.

10. A wheel. body having a body portion comprising a plurality ofalternate plies of'fibrous material and bonding material, an outstandingcontour-defining portion molded upon one face of the body, and a ply ofthe said bonding material vulcanized to the said face and conforming tothe contour thereof, a portion of the last-mentioned ply extending overthe periphery of the body.

In testimony whereof we aflix ourv signer tures.

HARRY N. ATWOOD. GEORGE BAINS, 3D, [L.S.]

